1,Adjustable air control value to regulate the air and the diffuser.
2, Turn the button of regulation, the return bottom can regulate the opening angle of brake leaf synchronously.
3, The brake is suitable for installing at the back of a variety of outlet.
4, The air volume of product is convenient,stabilty, brake leaf can keep the position unchanged.
5,Specification:4" ,6" ,8" , 10" , 12" , 14" , 16" , 18" , 20"